﻿#region Copyright
// Partial Copyright (c) LogoUI Software Solutions LTD
// Author: Vladislav Spivak
// This source file is the part of LogoFX Framework http://logofx.codeplex.com
// See accompanying licences and credits.
#endregion


using System.Windows;
#if !WinRT
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Interactivity;
using LogoFX.Core;
using EventTrigger = System.Windows.Interactivity.EventTrigger;
#else
using LogoFX.Core;
using Windows.UI.Interactivity;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Markup;
using Windows.UI.Xaml.Media;
using EventTrigger = Windows.UI.Interactivity.EventTrigger;
#endif

namespace LogoFX.Infra.Interactivity
{
    //todo:clarify usecase
    public class SwitchParentAction
#if WinRT
        : TriggerAction<FrameworkElement>
#else
        : TriggerAction<DependencyObject>
#endif
    {

        private DependencyObject _originalParent;


        public SwitchParentAction()
        {

        }

        public FrameworkElement Target
        {
            get { return (FrameworkElement)GetValue(TargetProperty); }
            set { SetValue(TargetProperty, value); }
        }

        // Using a DependencyProperty as the backing store for Target.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty TargetProperty =
            DependencyProperty.Register("Target", 
            typeof(FrameworkElement), 
            typeof(SwitchParentAction), 
            new PropertyMetadata(null));



        public DependencyObject NewParent
        {
            get { return (DependencyObject)GetValue(NewParentProperty); }
            set { SetValue(NewParentProperty, value); }
        }

        // Using a DependencyProperty as the backing store for NewParent.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty NewParentProperty =
            DependencyProperty.Register("NewParent", 
            typeof(DependencyObject), 
            typeof(SwitchParentAction), 
            new PropertyMetadata(null));

        

        protected override void Invoke(object parameter)
        {
            this.SwapParent();
        }

        private void SwapParent()
        {
            if (this._originalParent == null)
                this._originalParent = this.Target.Parent;

            
            DependencyObject newParent;

            if (this.Target.Parent == this._originalParent)
            {
                newParent = this.NewParent;
            }
            else
            {
                newParent = this._originalParent;
            }

            this.RemoveTarget();
            this.AddTarget(newParent);
                    
        }


        protected void AddTarget(DependencyObject newParent)
        {

            if (newParent.GetType() == typeof(Border))
            {
                ((Border)newParent).Child = this.Target;

            }
            else if (newParent.GetType() == typeof(Panel))
            {
                ((Panel)newParent).Children.Add(this.Target);

            }
            else if (newParent.GetType() == typeof(ContentControl))
            {

                ((ContentControl)newParent).Content = this.Target;

            }

        }

        protected void RemoveTarget()
        {


            if (this.Target.Parent.GetType() == typeof(Border))
            {
                ((Border)this.Target.Parent).Child = null;

            }
            else if (this.Target.Parent.GetType() == typeof(Panel))
            {
                ((Panel)this.Target.Parent).Children.Remove(this.Target);

            }
            else if (this.Target.Parent.GetType() == typeof(ContentControl))
            {

                ((ContentControl)this.Target.Parent).Content = null;

            }
        }

    }
}
